
Celtra is a leading creative technology company that empowers marketers, media platforms, and agencies to scale their creative ideas through automation and AI. Founded in 2006, Celtra has developed a robust platform that enables the creation of high-quality, data-driven advertising across various channels, including mobile and desktop. With over 400 enterprise-level customers and more than 120 billion impressions delivered annually, Celtra stands out in the market for its innovative solutions that enhance ad performance and streamline creative processes. The company has a strong focus on collaboration and customer success, making it a trusted partner for brands like Unilever and Adidas.

Celtra is a leading creative technology company that empowers marketers, media platforms, and agencies to scale their creative ideas through automation and AI. Founded in 2006, Celtra has developed a robust platform that enables the creation of high-quality, data-driven advertising across various channels, including mobile and desktop. With over 400 enterprise-level customers and more than 120 billion impressions delivered annually, Celtra stands out in the market for its innovative solutions that enhance ad performance and streamline creative processes. The company has a strong focus on collaboration and customer success, making it a trusted partner for brands like Unilever and Adidas.
Founded: 2006
Core product: Creative automation / Creative Management platform (AdCreator)
Headcount (approx.): 206 employees
Scale: 100+ billion impressions delivered annually
Ownership: Majority stake acquired by Symphony Technology Group (STG) in 2021
Scaling creative production and distribution for digital advertising through automation and collaboration.
2006
Ad tech / Creative technology
$5,000,000
$4,000,000
Board seat for Ron Fisher noted
STG acquired a majority stake
“Majority investment by Symphony Technology Group (STG) in 2021; prior investors include SoftBank Capital, Unilever Ventures, and WPP Ventures”
We’re on a journey to create something new in the creative technology space, so if you’re interested in supporting the future of creativity - come join us! At Celtra, we make software for the most innovative brands and creative thinkers in the world. Our team is a collection of uniquely talented individuals with backgrounds ranging from SaaS, creative and media agencies, ad tech, and brand marketing. We’re passionate about enabling creativity and building software that makes content creation better, faster, and more efficient.
We are seeking a Security & Compliance Specialist to join our Infosec team in Ljubljana. This role is critical in bridging security, engineering, and business operations, ensuring Celtra’s SaaS platform remains secure, compliant, and aligned with customer as well as contractual obligations.
You will independently drive security audits, maintain compliance documentation and serve as a trusted link between Sales, Legal, and Engineering. This is a hands-on, mid–senior position where you’ll need to get up-to-speed quickly, with strong growth potential into broader Infosec responsibilities.
Your Responsibilities Security & Compliance
Business & Contracts Alignment
SaaS Procurement & Vendor Management Skills Preferred
Growth & Enablement
Requirements:
What do we offer?
About Celtra Celtra helps enterprise advertisers, media, and agencies design, approve, and deliver digital creative across the ever-growing number of campaigns, markets, designs, and variants. Celtra’s Creative Automation & Enablement Software for helps brands move faster than ever while dramatically scaling content production. Companies like adidas, TripAdvisor, Spotify, Unilever, NBCU, Lululemon, YETI, Vice, and hundreds more partner with Celtra to cut production costs while increasing efficiencies and output in the cloud.
Empowering Creativity through Diversity & Inclusion Our mission is to empower creativity - and we cannot fulfill our mission without different perspectives. Diversity drives innovation, and Celtra is committed to diversity, equity, inclusion, and belonging.
Every employee is empowered at Celtra - no matter your race, age, religion, gender identity, sexual orientation, physical or mental ability, or ethnicity. We hire the best, and develop our teams through continuous education and mentorship, in a community where everyone can bring their whole selves to work.
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